Mining machine



March 5, 1929. c. F'. osGooD MINING MACHINE Filed July 16, 1923 2Sheets-Sheet M si@ .NANMN March 5, 1929. c. F. osGoOD MIN/ING MACHINEbFiled July 16, 1923 2 Sheets-Sheet (L Ziorney,

Patented Max-.H2151 1.929.

Urrea STATES;

. lautes? CHARLES E. oscfoon,- or cLAnEMoN'r, NEW HAMPSHIRE, AssrGNon ToSULLIVAN MACHINERY COMPANY, A .coR-PoRA'rIoN or MASSACHUSETTS.

AApplication filed July 16,

. such a-machine ismaterially improved 'andA the mechanism more compactand flexible to operate'. "These land other objects and' ad-- vantagesof my invention will, however,h`ere inafter more fully appear.

In the ,accompanying drawings I have shown for purposes of illustrationone embodimentwhich myinv'entionmay assume in practice. A

Fig. 1 is a; planview partially in section of amining machine of the.flexibly fed type.

Fig. 2 'is a sideele'vution, partially in section,oFig.1 -.1

Fig. 3 is a diagrammatic view showingthe machine in operation inaroom.

Fig. g1 is a section online H of Fig. 1-

- In 'this illustrative construction I have shown a mining mach-ine ofthe room and pillartype comprising a casingl slidable o n its bottom 2on -the mine bot-tom and movable lat- .ferally by means offeedingmeans'nincluding advance and receding flexible feeding portions, herein`flexible feeding members 3 and 4 in the forml of wire ropes orcables,and hav- A ing a cutter bar 5 rigidly secured within said machine fframe provided with an endless cutter bit carrying cutter chain 6. Thefeediiign'ieans and -the cutter chain are driven from a suitable motor7, indicated by dot-'v 40 'ted lines in Fig. 2, which is controlled bysuitable' controlling and' .reveising mechanism, generallydesignatedrthrough driv ing connections hereinafter 4de scribed,..afnd

connected to a Afeed operating member and a take-up member, herein inthe form of drums 9 and 10, and to a cutter chain 'drieing sprock-- et11 rotatablein bearings on a vertical-axis beneath the rear end ofthemachine frame..

In describing my improved construction I will firstv describe the cutterchain driving mechanism. Itvvill be noted that the armature-shaft oft-hemotor A 7 is provided with a sp'ur pinion 12 which in turn meshes with aspur gear' 13 jou'rnaled on a stud 14 suitably carriedlby the frame 1.ASuitably driven .by

' inside of the machine fram-e.

MINING MACHINE.

i923. serial No. 651,829.

vertically disposed stud 17 on the rear en'd of f the machinefframe. Thegear 16 'is adapted to be connected at willto the sprocket 11 bymeans-of a.elutch mechanism 18-` underthe control of -a shippermechanism 19 'operated by a lever 20. su1tably carri ed on theadvancooperating with this n'lechanismlis the -feeding 'mechanism'. Thismechanism is herein connected to and driven by' an upstanding sleeve 21rotatable with the bevel gear 16, the Y' same being connected by asemi-permanent clutch 22 toa sleeve. 23 having aworm24 formed thereon,the sleeve 23 in turn' being suitably journaled on a'langedbearingsleeve 25 and in' bearings, not-shown, carried within a removablecap member-. 26 carried by thev ftopof the machine frame.

v I This worm 24 meshes with a worm gear 27 disposed on a transversehorizontal axis..- As shown, the

Worm 27 is keyed, as at 28, to a'sleeve 29 which in turn drives, througha suitable planetaryv .change speed mechanism generally desig` nated 30,bevel pin-ions 31 and 32 suitably mounted on a shaft 33 secured withinthe machine framel and disposed coaxial with the axis of the worm gear27. .This lanetary change speed mechanism may bec? any approved formcomprising for instanc'ea central Jaw clutch member 56, longitudinallyslidable on and keyed to the shaft 33'Ladaptedwhen 1n one extremeposition of.movement to en gage ai mating clutch member 57 keyed to anannular frame-,member 58 carrying sets ofY coaxial planet gears '59. Oneofthe latter gears engages'an vinternalgear 60 fixed to rotatablymounted drum 61 while the-other 'gear meshes with a second. internalgear 62 fixed toa rotatably mounted annular member 6.3 having jawclu'tclrteeth fl'adaptedto be engaged by the clutch member 56 when movedVto its other extreme position. A friction band is adapted to hold Athedrum against rota` tion when desired. .In operation ofthe device whenhigh speed-is desired members 56 and 57 are engaged to thereby allori"the worm to drive the-planet gears E19-around the gear 60 whichisheldsta'tionary by the'frictionband. Movement'of the gears 59 thuscauses rotation of the gear carrying frame 58 which being connected tothe member-56 will directly drive the shaft 33 without in any way -usingthe right hand planet gear.- When a low speed 1S rear end of the machineframe 1.

operated through suitable toggle mechanism 36 by a lever 37 carried onthe advancing side of the machine frame. The bevel pinion 3l in turnmeshes with a bevel gear 38 suitably journaled on a longitudinallydisposed hori- Zontal shaft 39 and which is adapted to be connectedthereto by a jaw clutch 40 operated by a suitable shipper mechanism 41.Keyed 'to Athe shaft 39 is a spur pinion 42 which in turn meshes with aninternal gear 43 suitably secured to the Winding drum 10. Itwillbe notedthat this drum 10 is suitably journaled on a longitudinally' disposedhorizont-al axis on the As shown, the bevel pinion '32 which isoppositely disposed With respect to the shaft. 33, meshes with a bevelgear 45 adapted to be connected to a shaft 46, parallel with the shaft39, by means of a jaw clutch 47 similar to the Vclutch 40. This shaft 46drives a spur pinion 48 which in turn meshes with an internal gear 49suitably secured to the winding drum 9 suitably journaled on the machineframe on an axis parallel with the axis of the drum 10.

The exterior peripheries of the internal gears l 43, 49 are providedwith friction surfaces 51 and 52 under the control of brake bands 53 and54 operated through suitable .controlling mechanism by levers 55 carriedon opposite sides of the machine frame, one of which 1s shown 1n Flg.2.`

Cooperating with A the feeding mechanism and engaging the drums 9'and 10are the ilexible feeding members or cables 3 and Hereinthe machine isshown adapted to cut from right to left and in this disposition of partsit will be noted that the advancing cable 3AeX- tends from beneath thedrum 9 around a hori zontally disposed guide roll 56 and forward towardsthe front end of the machine and around an idler-sheave 57 laterallyr tothe lefthand rim, While the receding cable extends from beneath the drum10 laterally to the right hand rib. p l

In the operation of my improved construc- Ation the machine ispreferably, when unloaded from its transport truck, not shown., broughtup to the face at the right hand rib to the position indicated in fulllines in Figi 3. The advancingcable 3 is then connected to the left handrib toen anchor jack A, While thereceding cable 4 is connected-to theright hand rib and an anchor jack B. The clutch 18 is then thrown in,thereby rotating the cut- .ter chain and then by .throwing in the awclutch 40 and throwing out the jaw clutch thrown in and the machinemaybe straight- A cned upand then cnt transversely across the face ofthe room as indicated by the next dotted line lposition at the left, thedrum 9 winding in the cable 3 While the drum 10 pays out the cable 4under control of brake band 53. When the machine reaches the left handrib it may be inclined relative to the rib and backed out by suitablemanipulation of the clutches 40and 47 and the brake bands 53 and 54 inaWell known 'manner and returned to its truck at a high or haulage speed.During the entire cutting operation the speedl of the drums 9 and 10 isentirely under the `control of the planetary change speed mechanism 30.In the operation of my improved mechanism, it will be noted that bymeans of the clutch mechanism 18 the cut-ter chain driving sprocket 11may be rotated or caused to remain idle While the motor is rnnning.Attention is also directed to the fact that by suitable manipulation ofthe lever 37 controlling the brake band35'it is possible described oneform which my invention may assume in practice, it will be understoodthat this form of the same is shown for purposes of illustration andthat the invention may be modified and embodied in various other formswithout departing from its spirit or the scope of the appended claims.`

What I claim as. new and desire to secure by Letters Patent is: l

y 1. In a mining machine, a motor having its laxis extendinglongitudinally of the machine, y

and feeding mechanism including relatively rotatable Winding membersadapted to cooperate With flexible feeding means and rotatable onparallel horizontal axes lying in yertical planes parallel with thelongitudinal axis of said motor, said members being disposed in the sametransverse Zone, and driving mechanism between said motor and saidmembers.

2. In a mining machine, a lon itudinally disposed motor, and feeding mecanism 1ncluding relatively rotatable winding drums disposed on axesdisposed longitudinally of said motor and means to drive said drums fromsaid motor. said drums being disposed substantially in the sametransverse zone.

il. ln a mining' machine. a motor. feeding mechanism includingrelatively rotatable feed controlling elements disposed at the same endofthe machine on longitudinally extending parallel axes and each adaptedto cooperate with flexible feeding means. and driving mechanism betweensaid motor and said elements.

l. In a mining machine. a motor. feeding mechanism including relativelyrotatable feed controlling elements disposed at the same end ofthemachine on longitudinally extending parallel axes and each adapted tocooperate with flexible feeding means. and variable speed drivingmechanism between said motor and said elements.

'5. In a mining machine. a motor extending longitudinally of themachine. feeding meehanism including a plurality of relatively rotatablefeed controlling elements each adapted to cooperate with flexiblefeeding means and disposed at the rear end of the machine on axesparallel with the longitudinal axis of saidanachine. and means to driveeach of ,said elements from the rear end of said motor at a plurality ofpredetermined speeds.

(i. In a mining machine. a motor extending longittulinally of themachine. feeding mechanism including relatively rotatable feedcontrolling elements each adapted to cooperate with flexible feedingmeans and disposed at the rear end of the machine on axes parallel withthe longitudinal axis of said machine. means to drive each of saidelements from the rear end of said motor at a plurality of predeterminedspeeds. and means to vary said speeds.

T. In a mining machine, a motor feeding mechanism including relativelyrotatable windingr drums disposed side-byfside on parallel axesextending longitudinally of said motor and substantially in the sametransverse zone, driving mechanism between said motor' and drums todrive the latter. means to vary the speed. of said driving mechanism,and means to control rotation of said drums.

8. In a mining machine. a frame having relatively rotatable feedoperating and takeup members thereon each adapted to cooperate withflexible feeding means and rotatable on longitudinally7 extendingparallel axes at the same end of the machine and having surfaces adaptedto engage flexible feeding means. and guiding means disposed on eachside of the axes of said feed operating and take-up members.

E). In a mining machine, a motor having its axis extendinglongitudinally of the machine, a feed operating member and a relativelyrotatable take-up member each adapted to c0- operate with flexiblefeeding means and disposed on longitudinal axes parallel with the axisof said motor. and driving mechanism for said members including variablespeed planetary gearing common to both of vsaid members.

lll. In a mining machine, a frame. relatively rotatable feed operatingelements each adapted to cooperate with flexible feeding means carriedby said frame and disposed on parallel axes extending longitudinally ofthe machine, and driving mechanism between Asaid motor and said feedoperating elements including variable speed planetary gearing common toboth of said elements.

11. In a mining machine, a frame, relatively rotatable feed operatingelements carried thereby disposed on axes extending longitudinally ofthe machine and each adapted to cooperate with flexible. feeding means.and driving mechanism between said motor and said elements including avariable speed mechanism common to both of said elements and disposed ona transverse axis.

12. In a mining machine. a motor, a feeding mechanism includingrelatively rotatable winding drums disposed on axes extendinglongitudinally of the machine. and driving mechanism therefor includingfrictionally controlled planetary gearing common to both of said drums.

15%. In a mining machine, cutter chain driving mechanism, feedingmechanism therefor including a feed operating,member and a relativelyrotatable take-up member both disposed at the rear of the machine and onaxes extending longitudinally of the machine and adapted to cooperatewith flexible feeding means, planetary driving means for said members,and means to drive said members independently or simultaneously at va,-riable speeds.

14. In a mining machine, a frame slidable on its bottom on-the minebottom during operation of the machine and larrying a motor. Athe axisof said motor being horizontal and extending longitudinally of themachine, feeding mechanism for feeding the machine bodily laterally overthe mine bottom during the cutting operation including relativelyrotatable winding members rotatable on axes disposed in upright planesparalel to the axis of said motor and on opposite sides of said axis,and means to drive said members at variable speeds including frictionalmeans common to both of said members for controlling rotation thereof.

15. In a mining machine, a frame slidable on its bottom on the minebot-tom during operation of the machine and carrying a motor, feedingmechanism for feeding the machine bodily laterally over the mine bottomduring the cutting operation including a shaft, relatively rotatablewinding drums rotatable on axes disposed in upright planes parallel tofir'l the longitudinal axis of said machine and on opposite sides ofsaid axis and angularly disposed to the axis of said shaft, and mean.-lte drive eat-h ci' said drums atI a plurality of piedetifisninstlzllpeeds.

lti. li; a mining machine, a longitudinally dispo-'ed motor, and feedingmechanism including a feed operating member and a take-- up member eachadapted to cooperate with tlexlble feeding means and rotatable onlaterally spaced longitudii'ially extending horizontal axes on the rearend of ,said machine.

li'. The combination with a mining machine, of feeding mechanismtherefor including relatively rotatable feed controlling membersdisposed aty the same end of the machine and adapted to cooperate withfiexible feeding means and rotatable about longitudinally extendingparallel axes, and actuating means for said feeding mechanism includinga worm disposed between the axes of and common to both of said members.

18. The combination with a mining machine, of feeding mechanism thereforineluding relatively rotatable feed controlling elements each adapted tocooperate with ilexilfl-e feeding means and disposed at the same end ofthermachine and rotatable on longitudinally extending parallel axes, andactuating means therefor including driving mechanism disposedsubstantially in a zone between the axes of said members.

19. A mining inachine having relatively rotatable feed controllingelements each adapted to cooperate with flexible feeding means anddisposed atl the same end of the machine and rotatable on longitudinallyextending parallel axes. cutting mechanism, and actuating means thereforincluding a Substantially vertical .shaft and driving connectionsbetween said shaft and said members including a worm carried by saidshaft.

20. A mining machine having feedingv means therefor including aplurality of relatively rotatable feed controlling members each adaptedto cooperate with flexible feeding means and disposed at the same end ofthe machine and rotatable on substantially longitudinally extendingaxes, actuating means therefor including a plurality of shafts alsodisposed substantially longitudinally of said machine, and a shaftcommon to each of said other shafts for driving the latter and angularlydisposed relative thereto. t

2l. In a mining machine, a frame slidable on its bottom on the minebottom during operation of the machine, cutting mechanism carriedtheir-tyv including a cutter bar projecting froifi on-V end thereof, andfeeding means for beting; the machine bodily laterally over the mineletton; during the cutting operation including a toed continiling'memberadapted to ennp'i'fmaitht'le\hle feeding means and rotatable about ahorizontal l at the end of the mat-nine op- ..roin :said cutter bar in avertical plane um; longitudinally of the macltire, Iraans thereforincluding :i friial! in the saine general direction ag tie axis of saidmember, second shaft disposta! transversely of said plant ars mounted directly on (each of said shxr fts and meshing with each other, and :tthird shaft having its axis angularlji dit-spescil to the axes ef eachof .said other shaits and gearing between said second and third shafts.

ln a mining machine. a plurality of relativel)v rotatable feedcontrolling elements each adapted to cooperate with flexible feedingmeans rotatable on longitudinally extending axes and in substantiallythe same transverse Zone, power means for selectively driving either ofthe same. and means for frictionally controlling either of said elcmentswhen the other is boing power driven.

23. In a mining machine, a plurality of relatively rotatable feedcontrolling elements each adapted to cooperate with flexible feedingrmeans and rotatable on substantially parallel axes extendinglongitudinally of the machine and disposed at the same end of themachine, and means for frictionally controlling eaeh of the sameincluding actuating means for said elements disposed in a single plane.

24, In a mining machine. feeding mechanism therefor including aplurality of relatively rotatable feed controlling elements each adaptedto cooperate with flexible feeding means and disposed on parallel axesextending longitudinally of the machine at the saine end of the machine,power means for driving each of the same, and frictional means forcontrolling the same independently or simultaneously.

25. In a mining machine, a horizontal motor, and feeding mechanismincluding relatively rotatable feed operating and controlling memberseach adapted to cooperate with flexible feeding means and disposedvsideby-side on parallel axes disposed parallel with the longitudinalaxis of said motor and in substantially the same transverse zone, anddriving mechanism between said motor and members. I

26. In a miningmachine, ahorizontal motor having its axis extendinglongitudinally of the machine, and feeding mechanism driven by saidmotor including relatively rotatable feed operating and controllingrmembers each adapted to cooperate with flexible feeding means anddisposed on axes parallel with the longitudinal axis of said motor andin substantially the same transverse zone.

27. In a mining machine, a horizontal motor, and feeding mechanismincluding relatively rotatable feed operating and controlling memberseach adapted to cooperate with flexible feeding means and disposedside-byside on parallel axes disposed parallel with the longitudinalaxis of said motor and at the same end of the machine, and drivingmechanism between said motor and members.

28. In a` mining machine, a motor having its axis of rotation extendinglongitudinally of the machine, a plurality of relatively rotatable feedoperating and controlling members each adapted to cooperatewith'flexible feeding means and disposed on axes extendinglongitudinally of the machine and parallel with the axis of said motor,said members being disposed at Ithe same end of the machine, and drivingmechanism for said members including variable speed planetary gearingcommon to both of said members.

29. In a mining machine, a frame slidable on its bottom on the minebottom during operation of the machine and carrying a motor, feedingmechanism for feeding the machine bodily laterally over the mine bottomduring the cutting operation including relatively r0- tatable feedoperating and controlling members each adapted to cooperate withflexible feeding means and rotatable on axes disposed at the same end ofthe machine in upright planes parallel to the axis of said motor and onopposite sides of said axis, and means to drive said members at variablespeeds including frictional means common to both of said members forcontrolling rotation thereof.

30. In a mining machine, a longitudinally disposed motor, and feedingmec anism including relatively rotatable feed operating and controllingmembers rotatable on laterally spaced horizontal axes extendinglongitudinally of the machine and on the rear end of the machine andeach adapted to cooperate with llexible feeding means.

3l. In a mining machine, a plurality of relatively rotatable feedcontrolling elements each adapted to cooperate with flexible feedingmeans and rotatable on parallel axes extending longitudinally of themachine and in substantially the same transverse zone at the same end ofthe machine, power means for selectively driving either of saidelements, and means for frictionally controlling either of said elementswhen the other is being power driven.

32. In a mining machine, a motor, and feeding means driven by said motorincluding plural predetermined speed transmission means frictionallycontrolled at each of its predetermined speeds, and a plurality ofrelatively rotatable feed operatin and controlling members ydriventhereby isposed at the same end of the machine and rotatable on parallelaxes extending longitudinally of the machine, said members each beingadapted to cooperate With flexible feeding means.

33. In a mining machine, a, frame s lidable on` its bottom on the minebottom dunng operation ofthe machine and carrying a motor, and feedingmeans for feeding the machine bodily laterally over the mine bottomdurin the cutting operation including plural spee epicyclic gearingdriven thereby disposed with its axis of orbital movement in ahorizontal plane, a plurality of relatively rotatable feed operating andcontrolling members each adapted to cooperate with flexible feedingmeans and rotating on parallel axes lying in vertical planes extendinglongitudinally of the machine, and means for connecting said members tosaid gearing.

3ft. In a mining machine, a frame slidable on its bottom on the minebottom during operation 'of the machine and carrying a motor, andfeeding means for feeding the machine bodily laterally over the minebottom during the cutting operation including plural predetermined speedepicyclic gearing driven thereby disposed with its axis of orbitalmovement in a horizontal plane, and a feed operating.member adapted tocooperate With flexible feeding means and rotating on an axis lying in aplane parallel to a plane perpendicular to the axis of said orbitalmovement, and means for connecting said member to said gearing.

In a mining machine, a frame slidable on its bottom on the mine bottomduring operation of the machine and carrying a motor, and feeding meansfor feeding the machine bodily laterally over the mine bottom during thecutting operation including plural predetermined speed epicyclic gearingdriven thereby disposed with its axis of orbital movement in ahorizontal plane and extending transversely of the machine, a feed0perating member adapted to cooperate With flexible feeding means androtating on an axis lying in a plane parallel to a plane perpendicularto the axis of said orbital movement, and means for connecting saidmember to said gearing.

36. In a mining machine, a motor, and feeding means driven by said motorincluding plural predetermined speed transmission means frictionallycontrolled at each of said predetermined speeds, and a plurality ofrelatively rotatable feed operating. and controlling members driventhereby` rotating on parallel axes extending longitudinally of themachine at the same end of the latter, said members each being adaptedto cooperate with flexible feeding means.

37. In a mining machine, a horizontal motor having its axis extendinglongitudinally of the machine, and feeding means driven from the rearend vof said motor including plural predetermined speed transmissionmeans frictionally controlled at each of its predeterminedspeeds, and aplurality of relatively rotatable feed operating and controlling membersdisposed at the rear end of the machine each rotating on a horizontalaxis extending longitudinally of the machine and each adapted tocooperate with flexible feeding means.

38. In a mining machine, a horizontal motor having its axis extendinglongitudinally of the machine, and feeding means driven from the rearend of said motor including plural predetermined speed transmissionmeans frictionally controlled at each of its predetermined speeds, and aplurality of relatively rotatable feed operating and controlling membersrotating on parallel horizontal axes extending longitudinally of themachine and each adapted to cooperate with flexible feeding means.

39. In a mining machine, a horizontal motor having its axis extendinglongitudinally of the machine, and feeding mechanism driven from therear end of said motor including a feed operating member and arelatively rotatable controlling member each adapted to cooperate withflexible feeding means and rotating on a horizontal axis extendinglongitudinally of the machine, said members being at the rear end of thelatter.

40. In a mining machine, a motor, and feedin means driven by said motorincluding plgural predetermined speed epicyclic gearing frictionallycontrolled at each of its predetermined speeds, a pluralit of relativelyrotatable feed operating an controlling members each adapted tocooperate with flexible feeding means and rotating on parallelhorizontal axes extending longitudinally of the machine at the same endof the latter, and means for connecting said members to said gearing.

41. In a mining machine, a motor, and feeding means driven by said motorincluding a plural predetermined speed epicyclie' gear mechanismfrictionally controlled at each of its predetermined speeds and disposedwith its axis of orbital movement in a transverse horizontal plane, aplurality of relatively rotatable feed operating and controlling memberseach adapted to cooperate with flexible feeding means and rotating onparallel horizontal axes extending longitudinally of the machine, andmeans for connecting said members to said gear mechanism.

42. In a mining machine, a frame slidable on its bottom on the minebottom during operation of the machine and carrying a motor, cuttingmechanism driven thereby including a. cutter bar projecting from one endof the machine, and feeding means driven by said motor for feeding themachine bodily laterally over the mine bottom during the cuttingoperation including a plural predetermined speed epicyclic gearmechanism frictionally controlled at each of its predetermined speedsand disposed -With its axis of orbital movement in a horizontal planeand extending transversely of the machine, a feed operating memberadapted to cooperate with flexible feeding means rotating on an axislying in a plane parallel to a plane perpendicular to the axis of saidorbital movement and dis osed at the end of the machine opposite romsaid cutter bar, and means for connecting said member to said gearmechamsm,

43. In a mining machine, a motor, feeding mechanism including a feedoperating member and a relatively rotatable take-up member each adaptedto cooperate with flexible feeding means and rotatable on horizontalaxes disposed at the same end of the machine, said axes lying in uprightplanes parallel to the longitudinal axis of said machine and on oppositesides of said axis, and a vertically disposed driving Worm therefor.

44. In a mining machine, a frame slidable on its bottom on the minebottom during operation of the machine and carrying a motor, cuttingmechanism driven by said motor including a forwardly projecting cutterbar, and flexible feeding means for feeding the machine bodily laterallyover the mine bottom during the cutting operation including advance andreceding flexible feeding portions extending laterally in oppositedirections from opposite ends of said frame, relatively rotatable feedoperating members disposed at the same end of the machine on parallelaxes lying in parallel vertical planes extending longitudinally ofthemachine and adapted to cooperate with said feeding portionsrespectively, and a plural speed driving mechanism between said motorand said members and having a plurality of speeds frictionallycontrolled at each speed.

45. In a mining machine, a motor, and feeding means driven therebycomprising frictionally controlled planetary gearing, and a feedoperating member driven thereby adapted to cooperate directly Withflexible feeding means and rotatable on a` horizonaxis extendinglongitudinally of the Inac nne.

46. In a mining machine, a motor, plural speed epicyclic gearing driventhereby, a plurality of independently operable feed operating andcontrolling members adapted to cooperate With flexible feeding means androtating on parallel axes lying in vertical planes extendinglongitudinally of said machine, and means for connecting said members tosaid gearing. A

47. In a mining machine, a motor, plural speed epicyclic gearing driventhereby, a plurality of independently operable feed operating andControlling members adapted to cooperate with flexible feeding means androtating on parallel horizontal axes extending longitudinally of saidmachine, and means for connecting said members to 'said gearing.

48. In a mining machine, a motor, .and feeding means driven by saidmotor including plural predetermined speed transmission meansfrictionally controlled at each of its predetermined speeds andcomprising a terminal element transmitting power at each speed, and aplurality 0f independently operable drums rotatable on parallelhorizontal axes extending longitudinally of the machine.

49. In a mining machine, a motor, and feeding means driven by said motorincluding plural predetermined speed transmission means frictionallycontrolled at each of its predetermined speeds and comprising a terminalelement transmitting power fat each speed, and a plurality ofindependently operable drums driven bysaid terminal element rotatable onparallel axes in a common zone transverse to the drum axes and of thewidth of a single drum. I

50. In a mining machine, a motor, and feeding mechanism driven by saidmotor including plural predetermined speed transmission meansfrictionally controlled at each of its predetermined speeds andcomprising coaxial fast and slow speed clutches, a driving terminalelement selectively driven through said clutches,vand drums driven bysaid element rotatable on parallel axes extending longitudinally of themachine.

5l. In a mining machine, a motor, and feeding means driven therebycomprising variable speed transmission mechanism including coaxialdriving elements respectively effecting different speeds when operative,clutch means for rendering said driving ele- 'ments selectivelyoperative as the effective driving element, said clutch means disposedbetween saidV driving elements, and a plurality of feed drumsrotatable'on spaced axes extending longitudinally of the machine.

52. In a mining machine, a motor, plural speed epicyclic gearing driventhereby and having incorporated therewith means where-I by the same isfrictionally controlled at each speed, a plurality of feed operating andcontrolling members adapted to cooperate with flexible feeding means androtating on parallel axes lying in vertical planes extendinglongitudinally of said machine, and means for connecting said members tosaid gearing. 53. `In a mining machine', a motor, plural speed epicyclicgearing driven thereby and having incorporated therewith means wherebythe same is frictionally controlled at each speed, a plurality offeed-operating and controlling members adapted to cooperate with exiblefeeding means and rotating on parallel horizontal axes extendinglongitudinally of said machine, and means for connecting said members tosaid gearing.

54. In a mining machine, a motor, and feeding means including pluralspeed epicyclic gearing driven thereby and having incorporated therewithmeans whereby the same is frictionally controlled at each speed, aplurality of relatively rotatable feed operating and controlling membersadapted to cooperate with flexible feeding means and rotating on axeseach lying in a vertical plane extending longitudinally of the machine,and means for connecting said members to said gearing.

55. In a mining machine, a motor, a plu- "rality of feed operatingmembers adapted to cooperate with flexible feeding means and rotatableon parallel axes extending longitudinally of the machine, andtransmission inea-ns between each of said members and said motorincluding planetary gearing.

56. In a mining machine, a motor, feed operating members adapted tocooperate with flexible feeding means and rotatable on parallel axesextending longitudinally of the machine, cutting mechanism,'transmission means between said motor and said feed operating members,and means for driving said cutting mechanism from said transmissionmeans.

57. In a mining machine, a motor, feed operating members adapted tocooperate with iexible feeding means and rotatable i on parallel axesextending longitudinally of vthe machine, cutting mechanism, transmis.-

ClfRTlFlCATE OF CGRRECTION.

Patent No. 1,704,667. 'Granted March Fi, i029. to

CHARLES F. USGOD.

It is bercby certified that error appears in the printed specificationof the above numbered patent requiring correction as follows: Page 3,line 43, claim 7, after the word "motor" insert a comma; and that thesaid Letters Patent should be read with this correction therein that thesame may conform to the recond of the case in the Patent Office.

' 'Signed and sealed this 16th day of April. A. D. 1929.

t M. J. Moofe, (Seal) Acting Commissioner of Patents.

